GD 366

All names: GALEX J174826.9+450327, PG 1747+450, LSPM J1748+4503, 2MASS J17482682+4503280, WD 1747+450, WDJ174826.86+450327.85, Gaia DR3 1350517492310907392, GD 366, J1748+4503, Gaia DR2 1350517492310172416, TIC 193679430, PM J17484+4503, WD 1746+450, USNO-B1.0 1350-00289668, 1747+450, 17484+4503, Gaia EDR3 1350517492310907392, PG 1747+451

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Leggett et al. 2018 Gaia DR2 Stilism Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 17 48 27.11 (0.02) 17 48 27.10 (0.03) 17 48 27.10 (0.03) 17 48 27.11 17 48 26.86 (0.03) 17 48 27.10 17 48 26.93
Declination 45 03 27.17 (0.03) 45 03 27.19 (0.03) 45 03 27.19 (0.03) 45 03 27.17 45 03 27.85 (0.03) 45 03 27.19 45 03 24.48
Spectral type DC DC DC DC5.8 DC DC DC6 DC
Effective temperature [K] 8685.0 (86) 8486.0 (25) 8613.2 (67) 8634.0 (293) 8750.0 (284) 8532.0 (51)
log(g) [cgs] 8.26 (0.02) 8.19 (0.005) 8.26 (0.02) 8.35 (0.04) 8.00 (0) 8.23 (0.009)
Mass [M☉] 0.745 (0.01) 0.696 (0.004) 0.804 (0.04) 0.58 (0.1) 0.723 (0.008)
log(Luminosity) [L☉] -3.08
Cooling age [Gyr] 1.3100 1.6460 (0.3)
log(H/He) -4.0
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 33.43 (0.03) 33.43 (0.03) 33.43 (0.03) 33.43 (0.03) 34.37 (0.4) 33.43 (0.03) 33.43 33.43 (0.03) 33.43 (0.03)
Distance [pc] 29.91 (0.03) 29.91 (0.03) 29.91 (0.03) 29.91 (0.03) 29.10 (0.3) 29.91 (0.03) 37.40 (6) 29.91 29.91 (0.03) 29.91 (0.03)
Composition He He He
Proper motion (right ascension) [mas/yr] 164.783254 (0.03) 164.8404736 (0.06) 164.783 (0.03) 164.8404736
Proper motion (declination) [mas/yr] -42.67159986 (0.04) -42.50840518 (0.07) -42.672 (0.04) -42.50840518
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.79
V magnitude
R magnitude 15.60
I magnitude
J magnitude 15.31 (0.007) 15.43 (0.04)
H magnitude 15.19 (0.08) 15.19 (0.08)
K magnitude 15.17 (0.1) 15.17 (0.1)
u magnitude 15.82 (0.005) 15.85 (0.005)
g magnitude 15.57 (0.003)
r magnitude 15.59 (0.004)
i magnitude 15.69 (0.004)
z magnitude 15.82 (0.007)
G magnitude 15.55 (0.002) 15.56 15.56 15.55 15.55 (0.003) 15.56
BP magnitude 15.61 (0.002) 15.60 15.60
RP magnitude 15.39 (0.002) 15.39 15.39
Pan g magnitude 15.60 (0.002) 15.60 (0.003)
Pan r magnitude 15.63 (0.001) 15.63 (0.001)
Pan i magnitude 15.73 (0.002) 15.73 (0.002)
Pan z magnitude 15.85 (0.003) 15.85 (0.004)
Pan y magnitude 15.94 (0.008) 15.94 (0.006)
E(B-V) 0.003

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.